The Design of pressure vessels for the European market is subject to strict legal requirements. The central basis is the Pressure Equipment Directive (PED 2014/68/EU), which is intended to ensure that pressure equipment is developed uniformly and in accordance with recognized technical rules.

A practical example illustrates how a company goes about designing an unfired pressure vessel in order to reliably meet the requirements.

1. determination of the requirements

First, the pressure equipment is classified into the appropriate category of the PED based on operating pressure, volume and medium. This classification is crucial as it determines the further test steps and documentation requirements. At the same time, the requirements for materials and load limits are defined. The AD 2000 and EN 13445 regulations, which are recognized as the state of the art in Europe, are decisive here.

2. standardized calculations

The pressure tank is dimensioned on the basis of normative specifications:

• Wall thickness calculation according to AD 2000 data sheets or EN 13445-3 (elasticity theory).

• Design of flange connections in accordance with AD 2000-Merkblatt B 7, EN 13445-3 or EN 1591-1.

• Strength verifications for flat floors and slabs according to AD 2000-Merkblatt B 5.

These calculations form the basis for the safe design of the tank and ensure that the pressure load can be permanently absorbed.

3. material selection

The materials used must meet the requirements of the relevant standards. Materials tested in accordance with DIN EN 10204 are often used. For verification purposes, companies rely on material databases in which the standard-compliant characteristic values are stored - such as those available in MDESIGN Espresso. This allows suitable materials to be selected quickly and easily.

4. verification and documentation

A complete calculation report summarizes the boundary conditions, results and graphical representations. This documentation is not only important for internal purposes, but also for submission to notified bodies or market surveillance authorities. It is an advantage if the documents can be prepared in several languages to ensure smooth communication in the European market.

Advantages of the standard-compliant procedure

The consistent application of AD 2000 and EN 13445 offers several advantages:

• Legal certainty and liability minimization through standard-compliant Design.

• Efficient project management thanks to clear specifications and structured evidence.

• Acceptance by market supervisory authorities, as the legal requirements for the European market are met.

Conclusion

This example illustrates that compliance with PED 2014/68/EU is not an optional extra, but an integral part of the design process. The combination of standard-compliant calculation, tested materials and complete documentation makes it possible to develop safe, functional and market-driven pressure vessels.